Rolling brush and intelligent cleaning equipment

Abstract

The utility model relates to the technical field of household appliances, in particular to a rolling brush and intelligent cleaning equipment, the rolling brush comprises a main shaft and a tubular rubber sleeve, and the main shaft is provided with a first positioning part; a second positioning part is arranged on the inner wall of the tubular rubber sleeve, and blades are arranged on the outer wall of the tubular rubber sleeve; the main shaft is sleeved with the tubular rubber sleeve, and the tubular rubber sleeve is matched with the first positioning part through the second positioning part so that the tubular rubber sleeve and the main shaft can be positioned in the circumferential direction. According to the rolling brush, the main shaft and the tubular rubber sleeve are arranged, and the main shaft and the tubular rubber sleeve are matched through the first positioning part and the second positioning part to achieve assembly of the rolling brush, so that the rolling brush is few in parts, simple in structure, convenient to assemble and good in reliability, the machining time of the rolling brush can be shortened, and a user can conveniently disassemble and clean the rolling brush; therefore, the user experience is further improved, the product competitiveness is improved, and the brand popularity and recognition degree are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of household appliances, and in particular to a roller brush and intelligent cleaning equipment. Background Art

[0002] With the development of smart homes, sweeping robots are becoming more and more popular among families due to their convenience. The sweeping robot is equipped with a roller brush that rolls along the ground, rolls up the garbage on the ground, and extracts the garbage into the trash bin through a fan. Therefore, the roller brush is an important component of the sweeping robot.

[0003] Compared with traditional planted bristle brushes and integrated rubber brushes, the scraper blade of the full rubber roller is made of soft rubber, so it naturally has excellent hair cleaning capabilities. It has become a market trend to equip sweeping robots with full rubber rollers. There are two main ways to support the existing full rubber rollers. One is to use elastic materials to evenly distribute the support along the axis. Most of these materials are sponges. The other is to support multiple elastomers at intervals along the axis. Most of these materials are rubber. However, using sponges as elastic support parts requires glue bonding, which has high requirements for glue quality. The glue drying time in production is about 3 hours, the assembly cost is high, and the glue may fall off and fail during use, resulting in low reliability. When using rubber as a supporting ring, during the rotation of the rubber brush, some of the rings will not fit tightly against the inner wall of the rubber sleeve, and circumferential positioning needs to be designed, resulting in low structural reliability.

[0004] Therefore, in view of the above shortcomings, the present utility model is proposed. Utility Model Content

[0005] The utility model aims to provide a roller brush and an intelligent cleaning device to solve the problems of complex roller brush structure and low reliability in the prior art.

[0006] The first aspect of the utility model provides a roller brush for an intelligent cleaning device, comprising:

[0007] A main shaft, wherein a first positioning portion is provided on the main shaft;

[0008] A tubular rubber sleeve, wherein the inner wall of the tubular rubber sleeve is provided with a second positioning portion, and the outer wall of the tubular rubber sleeve is provided with blades;

[0009] Wherein, the tubular rubber sleeve is sleeved on the main shaft, and the tubular rubber sleeve cooperates with the first positioning portion through the second positioning portion to be circumferentially positioned with the main shaft.

[0010] The roller brush provided in this embodiment may also have the following additional technical features:

[0011] In a specific implementation manner of the utility model, one of the first positioning portion and the second positioning portion is a positioning key, and the other is a positioning groove, and the positioning key can be inserted into the positioning groove.

[0012] In a specific implementation manner of the utility model, the number of the positioning key is at least one, and when there are multiple positioning keys, the multiple positioning keys are evenly arranged along the circumference of the main shaft; and / or

[0013] The end surface of one end of the positioning key is a curved surface.

[0014] In a specific implementation manner of the present utility model, the tubular rubber sleeve includes a first rubber sleeve and a second rubber sleeve supported on the outside of the first rubber sleeve by supporting ribs, and the positioning groove is provided on the first rubber sleeve.

[0015] In a specific implementation manner of the utility model, the support ribs are arranged in pairs, one end of the two support ribs in a pair is connected to the first rubber sleeve, and the other end extends to the second rubber sleeve in a direction away from each other.

[0016] In a specific embodiment of the utility model, it further comprises a retaining ring, which is sleeved on the main shaft; a third positioning portion is also provided on the main shaft, and the main shaft can cooperate with the retaining ring through the third positioning portion to be axially positioned with the tubular rubber sleeve.

[0017] In a specific embodiment of the utility model, the main shaft includes a first end and a second end; the third positioning portion is a positioning ring, which is convexly arranged on the first end of the main shaft and is suitable for stopping with the end of the tubular rubber sleeve.

[0018] In a specific implementation manner of the utility model, a positioning groove is provided at the second end of the main shaft, and the retaining ring is sleeved in the positioning groove and is suitable for stopping with the end of the tubular rubber sleeve.

[0019] In a specific embodiment of the present invention, the side wall of the positioning groove away from the first end is an inclined surface suitable for guiding the retaining ring; and / or

[0020] The side surface of the retaining ring used for stopping the tubular rubber sleeve is a matching surface, the inner circle of the matching surface is provided with a chamfer, and the inner circle on the other side opposite to the matching surface is a right angle.

[0021] A second aspect of the utility model provides an intelligent cleaning device, which includes the roller brush described in any one of the above.

[0022] The roller brush provided by the embodiment of the utility model is provided with a main shaft with a first positioning portion and a tubular rubber sleeve with a second positioning portion, and the assembly of the roller brush is achieved through the cooperation of the first positioning portion and the second positioning portion, so that the roller brush not only has fewer parts and a simple structure, but also has convenient assembly of components and good reliability, thereby shortening the processing time and facilitating users to disassemble and clean, thereby further enhancing the user experience, improving product competitiveness, and improving brand awareness and recognition. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 This is a front view of a roller brush in one embodiment of the utility model;

[0025] Figure 2 This is a structural exploded view of the roller brush in the utility model;

[0026] Figure 3 for Figure 1 Schematic diagram of the cross-sectional structure of AA;

[0027] Figure 4 for Figure 3 A magnified view of the structure of part B;

[0028] Figure 5 for Figure 3 The structure of the middle C part is enlarged;

[0029] Figure 6 for Figure 1 Schematic diagram of the cross-sectional structure of the middle DD;

[0030] Figure 7 This is a front view of a tubular rubber sleeve in another embodiment of the utility model;

[0031] Figure 8 for Figure 7 Left view of .

[0032] Description of reference numerals:

[0033] 100-roller brush;

[0034] 10-main shaft, 11-first positioning portion, 12-third positioning portion, 13-positioning groove, 14-inclined surface;

[0035] 20- tubular rubber sleeve, 21- first rubber sleeve, 22- second rubber sleeve, 23- supporting ribs, 24- blades, 25- second positioning portion;

[0036] 30-Retaining ring. DETAILED DESCRIPTION

[0037] The exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to enable a more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.

[0038] It should be understood that the terms used herein are only for the purpose of describing specific example embodiments and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "one", "an" and "said" as used herein may also be meant to include plural forms. The terms "include", "comprise", "contain", and "have" are inclusive, and therefore specify the existence of stated features, steps, operations, elements and / or parts, but do not exclude the existence or addition of one or more other features, steps, operations, elements, parts, and / or combinations thereof. The method steps, processes, and operations described herein are not interpreted as necessarily requiring them to be performed in the specific order described or illustrated, unless the execution order is clearly indicated. It should also be understood that additional or alternative steps may be used.

[0039] Although the terms first, second, third, etc. can be used in the text to describe multiple elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms can only be used to distinguish an element, component, region, layer or section from another region, layer or section. Unless the context clearly indicates, terms such as "first", "second" and other numerical terms do not imply order or sequence when used in the text. Therefore, the first element, component, region, layer or section discussed below can be referred to as the second element, component, region, layer or section without departing from the teaching of the example embodiments.

[0040] For ease of description, spatial relative terms may be used herein to describe the relationship of one element or feature relative to another element or feature as shown in the figure, such as "inside", "outside", "inner side", "outer side", "below", "below", "above", "above", etc. Such spatial relative terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the figure. For example, if the device in the figure is turned over, then the elements described as "below other elements or features" or "below other elements or features" will subsequently be oriented as "above other elements or features" or "above other elements or features". Therefore, the example term "below..." can include both upper and lower orientations. The device can be oriented otherwise (rotated 90 degrees or in other directions) and the spatial relative descriptors used in the text are interpreted accordingly.

[0041] Combine the following Figure 1-8 The roller brush 100 provided according to the preferred embodiment of the present utility model is described.

[0042] like Figure 1-8 As shown, the roller brush 100 for the intelligent cleaning device may include a main shaft 10 and a tubular rubber sleeve 20. The main shaft 10 is provided with a first positioning portion 11; the inner wall of the tubular rubber sleeve 20 is provided with a second positioning portion 25, and the outer wall of the tubular rubber sleeve 20 is provided with blades 24; wherein the tubular rubber sleeve 20 is sleeved on the main shaft 10, and the tubular rubber sleeve 20 cooperates with the first positioning portion 11 through the second positioning portion 25 to be circumferentially positioned with the main shaft 10.

[0043] The main shaft 10 is generally cylindrical, and its two ends are used to connect with the body of the intelligent cleaning device, and the main shaft 10 can rotate around its central axis relative to the body of the intelligent cleaning device.

[0044] The tubular rubber sleeve 20 may be provided with a blade 24 integrally formed with the tubular rubber sleeve 20, so that garbage can be cleaned with the help of the blade 24. The tubular rubber sleeve 20 of this embodiment may be made of a soft rubber material, so that the integrally formed blade 24 is also made of a soft rubber material. The soft rubber material may be at least one of elastic materials such as rubber, silicone, TPU (thermoplastic polyurethane elastomer, ThermoplasticUrethane), TPE (thermoplastic elastomer, Thermoplastic Elastomer). In this way, the cleaning efficiency can be improved, the cleaning effect can be enhanced, and the use can be long-lasting, and at the same time, the tubular rubber sleeve 20 can produce elastic deformation, for example, it can be stretched to increase the inner diameter to facilitate the insertion of the main shaft 10.

[0045] Specifically, the main shaft 10 is inserted into the tube cavity of the tubular rubber sleeve 20, and is circumferentially fixedly connected with the second positioning portion 25 of the tubular rubber sleeve 20 through the first positioning portion 11. In this way, the main shaft 10 can provide support and driving function for the tubular rubber hose, and then when the intelligent cleaning device is in use, the main shaft 10 can be driven to rotate to drive the tubular rubber sleeve 20 to rotate, and then the ground can be cleaned by the blades 24 arranged on the outside of the tubular rubber sleeve 20.

[0046] The roller brush 100 provided in the embodiment of the utility model is provided with a main shaft 10 with a first positioning portion 11 and a tubular rubber sleeve 20 with a second positioning portion 25, and the assembly of the roller brush 100 is achieved through the cooperation of the first positioning portion 11 and the second positioning portion 25. The roller brush 100 has few parts, a simple structure, convenient assembly of components, and good reliability, which can shorten the processing time and facilitate user disassembly and cleaning, thereby further enhancing the user experience, improving product competitiveness, and improving brand awareness and recognition.

[0047] In one embodiment, one of the first positioning portion 11 and the second positioning portion 25 is a positioning key, and the other is a positioning groove, and the positioning key can be inserted into the positioning groove.

[0048] Specifically, the positioning key and the positioning groove are both arranged along the axial direction of the roller brush 100, and specifically extend from one end of the main shaft 10 or the tubular rubber sleeve 20 to the other end, so that when the end of the main shaft 10 is inserted into the inner cavity of the tubular rubber sleeve 20 from the end of the tubular rubber sleeve 20, the positioning key can be correspondingly inserted into the positioning groove, and as the insertion is completed, that is, when the main body of the tubular rubber sleeve 20 is sleeved on the main shaft 10, the positioning key is completely inserted into the positioning groove, thereby realizing the circumferential positioning of the main shaft 10 and the tubular rubber sleeve 20.

[0049] Optionally, the first positioning portion 11 is a positioning key, and the second positioning portion 25 is a positioning groove. When the tubular rubber sleeve 20 is sleeved on the main shaft 10, the positioning groove cooperates with the positioning key on the main shaft 10 to achieve circumferential positioning.

[0050] Optionally, the first positioning portion 11 is a positioning groove, and the second positioning portion 25 is a positioning key. When the tubular rubber sleeve 20 is sleeved on the main shaft 10, the positioning key is inserted into the positioning groove on the main shaft 10 to achieve circumferential positioning.

[0051] In this embodiment, the first positioning portion 11 and the second positioning portion 25 are configured as matching positioning grooves and positioning keys, so that the matching structure of the main shaft 10 and the tubular rubber sleeve 20 is simple, which is not only convenient for processing but also convenient for assembly, and is therefore beneficial to the processing and manufacturing of the roller brush 100.

[0052] In one embodiment, the number of the positioning key is at least one. When there are multiple positioning keys, the multiple positioning keys are evenly arranged along the circumference of the main shaft 10 .

[0053] In this embodiment, the first positioning portion 11 is a positioning key, the second positioning portion 25 is a positioning groove, and there are multiple positioning keys and the multiple positioning keys are evenly arranged along the circumference of the main shaft 10. Specifically, the number of positioning keys can be one or more, for example, 2, 3, 4, 6, etc. When there are multiple positioning keys, they are evenly arranged along the circumference of the main shaft 10. Optionally, in this embodiment, there are specifically 5 positioning keys.

[0054] In this embodiment, positioning keys are set on the main shaft 10 and multiple positioning keys are evenly distributed along the circumference of the main shaft 10. This not only facilitates the processing of the main shaft 10, but also helps to improve the connection strength between the main shaft 10 and the tubular rubber sleeve 20, and helps to disperse the driving force of the main shaft 10 to the multiple positioning keys for uniform transmission to the tubular rubber sleeve 20, thereby improving the stability and reliability of the roller brush 100.

[0055] In one embodiment, the end face of one end of the positioning key is an arc surface. By making the end face of the positioning key an arc surface, the end of the positioning key is set to be contracted, which is conducive to inserting the main shaft 10 into the positioning groove of the tubular rubber sleeve 20 when the main shaft 10 is inserted into the inner cavity of the tubular rubber sleeve 20, and during the insertion process, the arc surface can also reduce the interference with the positioning groove, so that the plug-in is smoother.

[0056] In one embodiment, the tubular rubber sleeve 20 includes a first rubber sleeve 21 and a second rubber sleeve 22 supported on the outside of the first rubber sleeve 21 by supporting ribs 23 , and the positioning groove is provided on the first rubber sleeve 21 .

[0057] Specifically, the first rubber sleeve 21 and the second rubber sleeve 22 are both tubular, and the diameter of the second rubber sleeve 22 is larger than that of the first rubber sleeve 21. The second rubber sleeve 22 is sleeved on the outside of the first rubber sleeve 21 and connected to the first rubber sleeve 21 through the support ribs 23. The positioning groove is provided on the first rubber sleeve 21, and the blade 24 is provided on the second rubber sleeve 22. Through the above arrangement, the thickness of the tubular rubber sleeve 20 can be guaranteed, thereby providing space support for the arrangement of the positioning groove, and the material used for the tubular rubber sleeve 20 can be reduced, thereby helping to reduce the cost of the roller brush 100.

[0058] In one embodiment, the support ribs 23 are arranged in pairs, and one end of the two support ribs 23 in the pair is connected to the first rubber sleeve 21 , and the other end extends away from each other to the second rubber sleeve 22 .

[0059] Specifically, the above arrangement can improve the support strength of the first rubber sleeve 21 in the tubular rubber sleeve 20 to the second rubber sleeve 22, thereby improving the deformation resistance of the second rubber sleeve 22, thereby preventing it from being damaged during use and improving its service life.

[0060] Optionally, the first rubber sleeve 21, the second rubber sleeve 22 and the supporting ribs 23 are an integrally formed structure.

[0061] In one embodiment, the axial length of the first rubber sleeve 21 is equal to the axial length of the support rib 23 and is smaller than the axial length of the second rubber sleeve 22. In this way, the axial length of the blade 24 on the surface of the second rubber sleeve 22 can be correspondingly extended, thereby increasing the cleaning area.

[0062] In addition to the above-mentioned arrangement provided in this embodiment, the support rib 23 may also have other arrangement methods. For example, the support rib 23 is arranged along the radial direction of the tubular rubber sleeve 20, and its connection end with the first rubber sleeve 21 may be located between adjacent positioning grooves or at the bottom of the positioning groove. Optionally, one end of two paired support ribs 23 is connected to the bottom of the same positioning groove.

[0063] In one embodiment, the roller brush 100 further includes a retaining ring 30, which is sleeved on the main shaft 10; the main shaft 10 is further provided with a third positioning portion 12, and the main shaft 10 can cooperate with the retaining ring 30 through the third positioning portion 12 to axially position the tubular rubber sleeve 20. By providing the retaining ring 30 and the third positioning portion 12 that can cooperate with the retaining ring 30, the axial positioning of the tubular rubber sleeve 20 can be achieved, and the axial movement of the tubular rubber sleeve 20 on the main shaft 10 can be avoided, thereby improving the reliability of the roller brush 100.

[0064] Specifically, the retaining ring 30 is annular and can be fixed to the other end of the main shaft 10 relative to the third positioning portion 12 after the tubular rubber sleeve 20 is sleeved on the main shaft 10. In this way, the retaining ring 30 and the third positioning portion 12 are respectively arranged at both ends of the tubular rubber sleeve 20, thereby realizing axial positioning of the tubular rubber sleeve 20.

[0065] In one embodiment, the main shaft 10 includes a first end and a second end; the third positioning portion 12 is a positioning ring, which is protruding from the first end of the main shaft 10 and is suitable for stopping with the end of the tubular rubber sleeve 20 .

[0066] The positioning ring is arranged at the end of the positioning key, and can be arranged at a distance from the positioning key or connected to the positioning key.

[0067] The positioning ring can be an integrated ring structure or a discontinuous ring structure. When the positioning ring is a discontinuous ring structure, its ring structure needs to be aligned with the gap of the positioning key, so as to stop the tubular rubber sleeve 20 inserted in the gap of the positioning key.

[0068] The height of the positioning ring may be greater than, equal to or less than the height of the positioning key. Optionally, to ensure the connection strength between the positioning ring and the tubular rubber sleeve 20, the height of the positioning ring is greater than or equal to the height of the positioning key.

[0069] Optionally, the positioning key, the positioning ring and the main shaft 10 are an integrally formed structure. Of course, in other embodiments, the positioning key, the positioning ring and the main shaft 10 can also be a separate structure, and connected to the main shaft 10 by welding or other connection methods.

[0070] In one embodiment, a positioning groove 13 is provided at the second end of the main shaft 10 , and the retaining ring 30 is sleeved in the positioning groove 13 and is suitable for stopping with the end of the tubular rubber sleeve 20 .

[0071] Specifically, the positioning groove 13 is annular and is arranged on the outer circumferential surface of the main shaft 10. The inner diameter of the retaining ring 30 is smaller than the diameter of the main shaft 10, and the outer diameter of the retaining ring 30 is larger than the inner diameter of the tubular rubber sleeve 20. In this way, when the retaining ring 30 is arranged in the positioning groove 13, it can be fixed in the main shaft 10 and can be stopped with the end of the tubular rubber sleeve 20, so that it can cooperate with the third positioning portion to achieve axial positioning of the tubular rubber sleeve 20 and the main shaft 10.

[0072] In this embodiment, the retaining ring 30 is positioned by providing the positioning groove 13 to prevent the retaining ring 30 from moving in the axial direction of the main shaft 10 , thereby ensuring the assembly stability of the roller brush 100 .

[0073] Of course, in other embodiments, the retaining ring 30 may also be fixed to the main shaft 10 via threads.

[0074] In one embodiment, the side wall of the positioning groove 13 away from the first end is a slope 14 suitable for guiding the retaining ring 30. In this way, the slope 14 can provide guidance for the retaining ring 30, thereby facilitating the retaining ring 30 to slide into the positioning groove 13 to stop with the tubular rubber sleeve 20.

[0075] In one embodiment, the side surface of the retaining ring 30 used for stopping the tubular rubber sleeve 20 is a mating surface, the inner ring of the mating surface is provided with a chamfer, and the inner ring on the other side opposite to the mating surface is a right angle. By providing a chamfer on the inner ring of the mating surface of the retaining ring 30, it is not only convenient for the retaining ring 30 to be sleeved on the spindle 10, but also possible to avoid the inner ring of its mating surface from interfering with the spindle 10, thereby facilitating its movement on the spindle 10. By setting the inner ring on the other side opposite to the mating surface of the retaining ring 30 at a right angle, it can interfere with the positioning groove 13 of the spindle 10, thereby preventing the retaining ring 30 from axial movement.

[0076] In one embodiment, the blades 24 are arranged in a V-shape, or the blades 24 are arranged in a spiral shape.

[0077] Optionally, the blades 24 are arranged in a bolt shape in the axial direction of the tubular rubber sleeve 20. When cleaning, for each blade 24, its end first contacts the bottom surface to scrape the garbage. As the silicone brush rotates, the position where the blade 24 contacts the bottom surface gradually transitions to the middle. In this process, the scraped garbage can be gradually gathered to the middle bend. That is, when the blades 24 are arranged in a V shape, it is convenient to collect dust at the V-shaped tip, which is convenient for vacuum suction of the intelligent cleaning device.

[0078] Optionally, the blade 24 is spirally arranged in the axial direction of the tubular rubber sleeve 20. In this way, dust can be easily collected at the end of the roller brush 100 during cleaning, thereby facilitating vacuum suction of the intelligent cleaning device. The width of the blade 24 decreases in its extension direction, so that the width of the end of the blade 24 close to the main shaft 10 is larger to improve its connection strength, while the width of the end away from the first roller is smaller to improve its flexibility.

[0079] This embodiment optimizes the blades 24 of the roller brush 100 to facilitate dust collection, thereby improving the cleaning effect of the roller brush 100.

[0080] In one embodiment, the main shaft 10 can be made of plastic material, that is, a plastic shaft. The cross-sectional shape of the main shaft 10 can be circular, and its two ends can extend beyond the tubular rubber sleeve 20 to facilitate connection with the body of the intelligent cleaning device. The two axial ends of the main shaft 10 can be provided with end mounting pieces, and the end mounting pieces can be square holes and / or square columns.

[0081] According to another aspect of the present invention, an intelligent cleaning device is also provided, which includes the above-mentioned roller brush 100. The structure of the roller brush 100 is described above, and for the sake of brevity, it is not repeated. Since the intelligent cleaning device in this embodiment includes the above-mentioned roller brush 100, it at least has the beneficial effects of the above-mentioned roller brush 100.

[0082] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A roller brush for use in intelligent cleaning equipment, characterized in that: include: A main shaft, wherein a first positioning portion is provided on the main shaft; A tubular rubber sleeve, wherein the inner wall of the tubular rubber sleeve is provided with a second positioning portion, and the outer wall of the tubular rubber sleeve is provided with blades; Wherein, the tubular rubber sleeve is sleeved on the main shaft, and the tubular rubber sleeve cooperates with the first positioning portion through the second positioning portion to be circumferentially positioned with the main shaft.

2. The roller brush according to claim 1, characterized in that: One of the first positioning portion and the second positioning portion is a positioning key, and the other is a positioning slot, and the positioning key can be inserted into the positioning slot.

3. The roller brush according to claim 2, characterized in that: The number of the positioning key is at least one; when there are multiple positioning keys, the multiple positioning keys are evenly arranged along the circumference of the main shaft; and / or The end surface of one end of the positioning key is a curved surface.

4. The roller brush according to claim 2, characterized in that: The tubular rubber sleeve includes a first rubber sleeve and a second rubber sleeve supported on the outside of the first rubber sleeve by supporting ribs, and the positioning groove is arranged on the first rubber sleeve.

5. The roller brush according to claim 4, characterized in that: The support ribs are arranged in pairs, and one end of the two support ribs in the pair is connected to the first rubber sleeve, and the other end extends to the second rubber sleeve in a direction away from each other.

6. The roller brush according to claim 1, characterized in that: It also includes a retaining ring, which is sleeved on the main shaft; a third positioning portion is also provided on the main shaft, and the main shaft can cooperate with the retaining ring through the third positioning portion to axially position the tubular rubber sleeve.

7. The roller brush according to claim 6, characterized in that: The main shaft comprises a first end and a second end; the third positioning portion is a positioning ring, which is convexly arranged on the first end of the main shaft and is suitable for stopping with the end of the tubular rubber sleeve.

8. The roller brush according to claim 7, characterized in that: A positioning groove is provided at the second end of the main shaft, and the retaining ring is sleeved in the positioning groove and is suitable for stopping with the end of the tubular rubber sleeve.

9. The roller brush according to claim 8, characterized in that: The side wall of the positioning groove away from the first end is an inclined surface suitable for guiding the retaining ring; and / or The side surface of the retaining ring used for stopping the tubular rubber sleeve is a matching surface, the inner circle of the matching surface is provided with a chamfer, and the inner circle on the other side opposite to the matching surface is a right angle.

10. An intelligent cleaning device, characterized in that: The invention comprises a roller brush as described in any one of claims 1 to 9.

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